package com.jingdianjichi.subject.domain.util;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
 
@Component
public class SpringBeanUtil implements ApplicationContextAware {
    private static ApplicationContext applicationContext = null;
 
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws
            BeansException {
        // TODO Auto-generated method stub
        SpringBeanUtil.applicationContext = applicationContext;
    }
 
    /**
     * 从静态变量applicationContext中得到Bean, 自动转型为所赋值对象的类型.
     */
    @SuppressWarnings("unchecked")
    public static <T> T getBean(String name) {
        if (name == null || applicationContext == null)
            return null;
        return (T) applicationContext.getBean(name);
    }
 
    /**
     * 从静态变量applicationContext中得到Bean, 自动转型为所赋值对象的类型.
     */
    public static <T> T getBean(Class<T> clazz) {
        return applicationContext.getBean(clazz);
    }
 
}